Valve



2 4Sheets-Sheet l July 27 1926.

D. CQSSETTE VALVE Filed Jan. 22. 1925 n m\ Y Inventor Attorney July 27,1926. 1,593,195

D. COSSETTE vALvE Filed Jn. 22. 1925 2 sheets-sneu 2 I 4f i Fazi 1 1 40 a5 I l Q 55 2/ 26 g5 O mi- 1li I 22/& l T J9 L Il 2'9 |l f l 2 4.9 www? /f ff Jo /I ,i 22

@uw I l' 5gg! |I ffm' 4 f4 www? J2 @ff/ 7 25 jg@ 6 20w/af sse/fe, Inventor Attorney Patented July 27, 1926.

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DONAT COSSETTE, OF KENOGAM, CANADA.

VALVE.

Application le'd January 22, 1925. vSerial No. 4,076, and Canada December 12, 1923.

The present invention pertains to a novel fluld valve designed particularly for use in connection with woo-d pulp grinders but adapted for any operation depending upon 5 the reversal of the flow of .a stream of water. A wood pulp grinder includes a hammer which isreciprocated by means of a pressure actuated piston. The piston is disposed in the cylinder adapted for the entrance of water at opposite' ends thereof. Obviously, as the flow of water is reversed with reference to the ends of the cylinder, the piston Iis moved one stroke with each reversal Consequently, it is necessary to use a means r for reversing the ilow of fluid, and a valve for accomplishing this function comprises the subject matter ofthe present invention. The cylinder' above 4referred to is formed with a Vpair of ducts .communicating with i opposite ends thereof and with the valve in question. The valve comprises .a housing having a pair of parallel passages or conduits which communicate separately with the ducts. At vone end `the passages may be united and adapt-ed for the reception of a fluid inlet pipe.' Within the housing `is Supported a rotatable valve head of a double character, each portion thereof being adapted to allow entrance of water into one end of the cylinder while the remaining portion is so .disposed as to permit the .outflow of waste water .fromthe other end] .ofthe cylinder. This peculiar property of the valve is attained by the formation therein of a pair of channels disposed at an angle to one another having branches extending therefrom ,so that one portion serves `as a part of the inlet while the .remaining v.portion is a part .of the-outlet. The positions of these Aportions are Ireversed `by turning the valve at an angle, whereby the stroke .of the piston within the cylinder is reversed.

The invention is fully disclosed in the following description and in the accompanying drawings in which:-

Figure 1 is a longitudinal section through a pulp grinder unit, showing in elevation the vai-ve Aapplied fthereto;

Figure 2 is a vertical longitudinal section through the valve with the valve head removed;

Figure 3 is an elevation of the valve;

Figure 4.- is a transverse vertical section through the valve;

Figure 5 is a longitudinal vertical section through the valve;

Figure (i is a horizontal section through the lower conduit of Figure 5; and

.Figure 7 is a horizontal section through the upper conduit of Figure 5.

Reference will now be had to ythese views by means of like lchaiacters which are employed to designate corresponding parts throughout.

The numeral 1 indicates a shaft mounted in suitable bearings 2 and 3 and having a millstone 4l keyed thereto. Secured to the upper ends of the Vmembers 3 is a pulp receiver the lower portion of which `its snugly on the periphery of the stone. The receiver is equipped with a door 6 through which it is charged with pulp. Upon the receiver is mounted a cylinder 7 in which is fitted a piston 8 carried by a piston rod extending through the .partition plate 1l) between the receiver andthe cylinder. The rod end which is disposed within the receiver carries a hammer 11 adapted to beat upon a portion of the circumference of the .stone to crush the material which is fed into the receiver. Ordinarily three such units are spaced at 60 apart around half the circumference of the stone. Means must be provided for causing the reciprocation of the rod 9 through the vproper distance and at the proper rate. .ln the present instance this means is in .the nature of a valve which constitutes the subject mat-ter of the invention.

A .portion of the cylinder wall is thickened as at 12 forming a pair of ducts 13 and 14 communicating with the top and bottom respectively` of the cylinder'. An abutment 15 extends from 4the inner section 16 of the wall through a boss 17 formed with the outer section 16. The .boss is flanged as at 19 for the lattachment of a valve thereto. y

The valve comprises a housing 20 through which are cut an upper longitudinal conduit 21 and lower longitudinal conduit 22 extending from one side to the other. A side ofthe housing is formed with an attachment plate 23 adapted to be secured to the flanged portion 19, as will be understood by reference to Figures 1 and 2. The ends of the conduits at the opposite side of the housing may be united as at 24 and threaded for the reception of a water pipe.

Within the housing is disposed a cylindrical valve casing 26 whereby the surrounding portion of the housing acquires the charleak-proof construction.

acter of a water chamber 27. The housing is formed in two parts, there being an abutment member 28 which includes a bottom 29 for the valve casing. The casting 28 is secured to the body of the housing by means of bolts 30 rI`he interior of the valve casing is placed in communication with the chamber 27 by means of an Lipper port 3l and a lower port 32, these ports being spaced approximately 1800 apart. The conduits 2l and 22 pass through the wall of the valve casing as is apparent from the several ligures.

Within the valve casing,- is rotatably sup ported a valve head 33 having a stem 34 passing through the top of the housing, ln the top is inserted a gland 35 through which the stem also passes, in order to provide a The conduits 2l and 22 leave between them al partition 36. Grooves 37 `termed in the periphery of the valve head receive packing rings 38 which also extend into grooves 39 'formed in the interior surface of the valve casing wall.

The valve head 33 is formed with an upper channel 49 and a lower channel 50 disposed atright angles to each other. These channels are adapted to aline separately with the conduits 2O and 21. Each channel is formed with a branch disposed at right anglee thereto, and the two branches are indicated by the numerals 49 and 50.

In the operation of the device, let it be assumed that the valve head is disposed in the position indicated in Figures 5, 6 and 7 wherein the lower channel 50 is in communication with the lower conduit 22 and the corresponding branch 50 is blocked as shown in detail in Figure 6. The upper conduit 2l is in communication with the chamber 27 through the upper branch 49 and one end of the channel 49. The remaining end of the channel. 49 is closed by means ot the valve casing' wall as shown in Figure 7. The water entering through the inlet pipe 25 is thus allowed to flow through the low er conduit 22 and into the lower portion of the cylinder by way of the lower duct 14. On the upward stroke of the piston the waste water is forced through the upper conduit 2l, into the branch 49, through the upper channel 49, into the chamber 27 and through the waste outlet 5l formed as part of the lower casting 28.

In order to reverse the movement of the piston, the valve is turned through 90c from the position shown in Figures 5, 6 and 7.

The valve head now takes the position wherein the upper channel 49 is in alinement with the Lipper conduit 2l while the branch 49 is closed by the wall of the valve casing. The lower channel 50 has one end in communication with the chamber 27 while the remaining end is closed by the valve casing wall. The branch 50 places the chan- 'G nel 50 in con'nnunication with the lower conduit 22. The water entering trom ine pipe 25 passes through the upper conduit into the upper duct 13 and into the top o'l' the cylinder, On the downward movement of the piston, the waste water is 'l'orced into the lower conduit 22, through the branch 59' and channel 59, into the chamber 2i' and through the outlet 511. In. order again 'io reverse the movement of' the piston, the valve is turned to the vformer position, and this o|i eration is repeated whe-never it is desired to reverse the piston.

lt will be seen from F igure 4 that one side ot' the chamber may be lowered to a point just above the lower port 32, it being ol necessary that the port shall communie. i with the interior of the chamber. rEhe o posite is necessarily higher in order to 11 vide communication with the upper poi 3l.

IVhile a specic embodiment ot the invention has been illustrated and described, it is to be understood that various altera tions in the details of construction may be made without depart-ing from the spirit ot the invention as indicated by the appended claim.

Having thus fully described the invention. what I claim as new and desire to protect by Letters Patent is A valve comprising a housinglhaving a pair of conduits formed therein, a valve casing mounted in said housing and Ytorminzf; a chamber within the housing", a valve head rotatably supported insaid casingl and hav-- ing a pair of channels adapted each for communication with one of said conduits, said channels being disposed at an angle to each other` said valve having also branches ef; tending from said channels, said casing having angularly spaced ports with which said branches are adapted to register', inlet mean; to said channels, and outlet means 'from said chamber.

In witness whereof I have hereunto set my hand.

DONAT COSSETTE. 

